GB242664A - Improvements in or relating to electro-magnetic cut-outs - Google Patents
Improvements in or relating to electro-magnetic cut-outsInfo
- Publication number
- GB242664A GB242664A GB28072/25A GB2807225A GB242664A GB 242664 A GB242664 A GB 242664A GB 28072/25 A GB28072/25 A GB 28072/25A GB 2807225 A GB2807225 A GB 2807225A GB 242664 A GB242664 A GB 242664A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- circuit
- springs
- core
- button
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/32—Insulating body insertable between contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/48—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having both electrothermal and electromagnetic automatic release
- H01H73/56—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having both electrothermal and electromagnetic automatic release reset by push-button, pull-knob or slide
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
242,664. Stotz Ges. Abteilung der Brown, Boveri, et Cie, Akt.-Ges. Nov. 8, 1924, [Convention date]. Automatic circuit-breakers; springs, arrangement and disposition of; arc-rupturing devices.- Relates to automatic cut-outs of the kind provided with current-carrying spring contacts between which is inserted an insulating barrier. As shown in Figs. 1 and 2, current normally passes through the manually-engaging spring contacts 7 and through a solenoid 3. The solenoic has a core consisting of magnetic plates 4 between which is secured an insulating barrier 5 adapted to be moved between the contacts 7 or attraction of the core by excessive current in the solenoid 3. To ensure quick breaking of the circuit, the core is connected by links 18 to one end of a lever 10, which is pivoted at 12 and has springs 14 connected between its other end 17 and a fixed point 15. The arrangement is such that the initial attraction of the core 4 moves the springs over the dead centre into a position in which they can quickly complete the movement of the member 5. To deal with small overloads of long duration a thermal release is provided consisting of a bimetallic strip 8 fixed at one end and bearing with its free end on the lever 10, a heating coil 9 included in the cut-out circuit being arranged near to the strip. To reset the cut-out a spring-controlled push button is depressed, a notched projection 26 of the button engaging the upper end of the barrier 5, but the circuit is not completed until the button is released and returned by springs 25, so drawing the insulating projection 26 from between the contacts 7. To indicate the operation of the cutout a coloured pin 28 is arranged to project through a hole in the push-button when the barrier 5 is raised. A magnetic blow-out action is produced by placing the coil 3 beneath the contacts 7. In a modified form, Fig. 6, in which the circuit is broken simultaneously between two series-connected pairs of contacts the arcs between them are blown out as shown in opposite directions.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE242664X | 1924-11-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB242664A true GB242664A (en) | 1926-07-01 |
Family
ID=5917103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28072/25A Expired GB242664A (en) | 1924-11-08 | 1925-11-07 | Improvements in or relating to electro-magnetic cut-outs |
Country Status (4)
Country | Link |
---|---|
US (1) | US1629640A (en) |
FR (1) | FR605790A (en) |
GB (1) | GB242664A (en) |
NL (1) | NL16777C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2201290A (en) * | 1987-02-17 | 1988-08-24 | Fdb Electrical Ltd | Earth leakage circuit breaker |
GB2233825A (en) * | 1989-07-11 | 1991-01-16 | Uchiya Thermostat | Relay having a water sensor |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2477067A (en) * | 1941-06-06 | 1949-07-26 | Line Material Co | Automatic reclosing circuit breaker |
US2463216A (en) * | 1945-05-28 | 1949-03-01 | Milwaukee Gas Specialty Co | Thermocouple safety pilot switch |
US2854544A (en) * | 1956-08-06 | 1958-09-30 | John P Wuerthner | Relay |
US3081393A (en) * | 1958-07-15 | 1963-03-12 | Robert J Wohl | Electric vaporizers |
US3168627A (en) * | 1962-03-07 | 1965-02-02 | Western Electric Co | Relay with positively driven contacts |
US3277412A (en) * | 1963-01-19 | 1966-10-04 | Acena Alfonso Romera De La | Electromagnetic switch having intermittent operation |
US3918015A (en) * | 1974-08-12 | 1975-11-04 | Raymond Lee Organization Inc | Controlled circuit breaker unit |
US4458225A (en) * | 1982-11-18 | 1984-07-03 | Eaton Corporation | Circuit breaker with independent magnetic and thermal responsive contact separation means |
DE3402372A1 (en) * | 1984-01-25 | 1985-08-01 | Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim | ELECTRICAL SWITCHING ELEMENT |
-
0
- NL NL16777D patent/NL16777C/xx active
-
1925
- 1925-11-07 GB GB28072/25A patent/GB242664A/en not_active Expired
- 1925-11-07 FR FR605790D patent/FR605790A/en not_active Expired
-
1926
- 1926-08-19 US US130205A patent/US1629640A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2201290A (en) * | 1987-02-17 | 1988-08-24 | Fdb Electrical Ltd | Earth leakage circuit breaker |
GB2233825A (en) * | 1989-07-11 | 1991-01-16 | Uchiya Thermostat | Relay having a water sensor |
US5124679A (en) * | 1989-07-11 | 1992-06-23 | Uchiya Thermostat Co. | Automatic power breaker and relay and water sensor used in the automatic power breaker |
GB2233825B (en) * | 1989-07-11 | 1994-04-13 | Uchiya Thermostat | Automatic power breaker and relay for use in the automatic power breaker |
Also Published As
Publication number | Publication date |
---|---|
FR605790A (en) | 1926-06-01 |
NL16777C (en) | |
US1629640A (en) | 1927-05-24 |
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